(YouTube) Short fragment of Vadim Artsev participating in the Neurothlon 2018 DBN cyborg competition in Samara, Russia, which he would win. Here he is wearing The vOICe sensory substitution smart glasses and correctly visually identifies a phone among other objects https://www.youtube.com/watch?v=MliIw8iSVwY

The vOICe sensory substitution smart glasses for the blind in daily living: standing in line at the supermarket checkout http://techesoterica.com/?p=1119 by Pranav Lal; and yes, size matters, in this case the apparent visual size of the back of the person in front: nearby if filling most of the camera view.

How to Build your own Eye! TEDx presentation by blind user of The vOICe smart glasses Pranav Lal at TEDxSayajigunj, Vadodara, Gujarat, India https://www.youtube.com/watch?v=tcD6E52QV-8#AR: augmented reality for the blind (slides not showing in the video)